OG239

239. Organized in 1966 by the Fish and Wildlife Service, the Breeding Bird Survey uses annual roadside counts
along established routes for monitoring of population changes of as many as. or of more than 250 bird
species, including 180 songbirds.
(A) for monitoring of population changes of as many as, or of
(B) to monitor population changes of as many, or
(C) to monitor changes in the populations of
(D) that monitors population changes of
(E) that monitors changes in populations of as many as

答案是B一刚,AS MANY 没有AS的,难道这是有效性错误?

语法优先啊，先要保证句子正确，然后再考虑最贴近原文。只有C是语法正确的~~~